Pith Number

pith:KZ2LDV4I

pith:2022:KZ2LDV4I5QMWEX4UVPWSC4WWL6

not attested not anchored not stored refs pending

Zeroth-Order Hard-Thresholding: Gradient Error vs. Expansivity

Bin Gu, Hualin Zhang, Huimin Wu, William de Vazelhes, Xiao-Tong Yuan

arxiv:2210.05279 v2 · 2022-10-11 · cs.LG · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KZ2LDV4I5QMWEX4UVPWSC4WWL6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T07:56:45.322303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5674b1d788ec19625f94abed2172d65fbbac75ad982e32e09aa69d6da81578dd

Aliases

arxiv: 2210.05279 · arxiv_version: 2210.05279v2 · doi: 10.48550/arxiv.2210.05279 · pith_short_12: KZ2LDV4I5QMW · pith_short_16: KZ2LDV4I5QMWEX4U · pith_short_8: KZ2LDV4I

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/KZ2LDV4I5QMWEX4UVPWSC4WWL6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5674b1d788ec19625f94abed2172d65fbbac75ad982e32e09aa69d6da81578dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3968ff7e56bd792621633a6fef481bb05bfaab98143d3ab3f3f96c748df74070",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2022-10-11T09:23:53Z",
    "title_canon_sha256": "9074706f7ea7dbe545363f4d30ce6ff6f7dda714f1a1dc893da87ab64af98f55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.05279",
    "kind": "arxiv",
    "version": 2
  }
}